Tube-forming machine



June 11,1929, com-n 1,7163425 TUBE FORMING MACHINE Filed Aug. ,1925 4Sheets-Sheet l INlfENTOR. Eugene Con/1.

June 11, 1929. CONT] 1,716,425

TUBE FORMING MACHINE Filed Aug. 8, 1925 4 Sheets-Sheet 2 l N V EN TOR.Eugene Con/1'.

June 11, 1929. CONT]. 1,716,425

TUBE FORMING TiACHINE Filed 1925 4 Sheets-Sheet 3 IN V EN TOR. EugeneCon/1'.

June 11, 1929. I -n I 1,716,425

TUBE FORMING MACHINE Filed Aug. 1925 4 Sheets-Sheet 4 llllll,

INVENTOR. Eugene Gan/1'.

Patented June 11, 1929.

EUGENE CONTI, or JERSEY CITY, NEW .rEEsEY, ASSIGNOR TO ALEX .NEWROCHELLE, NEW Yo K.

Th s} a ter @EFHCE.

ANDER HERZ, F

TUBE-FORMING MACHINE.

Application filed August The present invention relates to machines forforming paper tubes.

The invention contemplates the provision of mechanism for forming acontinuous tube and mechanism for cutting off predetermined lengthsthereof while the formed tube is fed continuously forward from theform-v ing mechanism. The speed of operation of machines of thischaracter is usually limited by the speed at which the-cut-ofi'mechanism can be effectively operated without unduly mutilating thetubes at the point of severing and without too great strain upon thecut-off mechanism or other parts 'of the machine. r

The present invention has for an object to provide an improved machineof this character having a cut-off mechanism which willbe effective inuse and which may be operated at high speed.

The nature-and objects of the invention will be better. understood froma description of particular illustrative embodiment thereof and for thepurpose of such description reference should be had to the accompanyingdrawings forming. a part hereof and in which:

Fig. 1 is a plan view of the illustrative embodimentof the invention;

Fig. .1 is a detail showing the manner in which the strips of stock arefed to and wound uponthe mandrel, and showing the relation of the stripsto the winding tape;

Fig. 2 is a side elevation of the machine;

Fig. 3is an elevation looking. at the opposite side to that shown inFig.2, and

Figs. 4: and 5 are detail. views of the cutoff mechanism.

This illustrative embodiment of the invention includes a bed 1 5, whichis supported by legs 16 and in turn sustains the operating parts of-themachine.

A mandrel,- which is of the, stationary type, round in cross-section issupported in substantially horizontal position, at one end only andis-free at its other end. The support for-this mandrel includes a post17 rigidly associated with and extending upwardly from the bed 15. Thismandrel 18 is mounted in the post for horizontal adjustment and issecured in its various adjusted positions by means such as a set screw.In order that the strips of stock crossheads 21 and 22 ad 8, 1925.Serial No. 49,150.

may be wound upon the'stationary mandrel to form a round tube, I haveprovided a bolster 20, which extends traversely of the bed in apredetermined relation to the mandrel, and beneath the same. Cross heads21 and 22 extend upwardly from the ends of the bolster 20, and supporthorizontally disposed pulleys 23 and 24, which are rigid with verticallydownwardly extending shafts 25 and 26, having bearings in the crossheads and having rigid with their lower ends beveled gears 27 and 28,which 5 mesh with similar gears 29 on a shaft 30. The shaft. 30 extendslongitudinally of the bolsterand is supported by a bearing 31, beingactuated be described. 1 7 A winding tape passes around the pulleys 23and 24 with the reaches of the tape crossed between the pulleys. Onereach 32 extends directly from one pulley to the other, while the otherreach 33 is wrapped about the mandrel several times so as to providemeans 'for engaging and forming the strips of stock into the continuoustube. Tensioning rollers 34 are mounted on the the reach 32of.,the-windin tape. The disn position of the bolster with relation tothe mandrel is such that the turns of the reach 33 about themandrelwill, in the formation of the tube, of the strips of stock and theproper feeding of the tube of the diameter being made.-

The pulleys 23 and 24 are actuated to draw the winding tape around thestationary mandrel by the shaft 30, which receives its motion throughthe intermeshing of beveled gears 35 and 36, the latter being ontheshaft30 and the former-rigid with a gear 37 which meshes with a similarbut smaller gear 38 rigid with a shaft 39 extending through the bolsterand having a bearing in I the bed 15. The speed of the shaft 30 andconsequently the speed of rotation of the pulleys 23 and 24 may bevaried by changing the ratio of the gears actuating the same.

For instance the gears 37 and 38 are SQ mounted that they may be removedand replaced b other gears tochange the ratio be-' .tween t e same. Thuse speed of the windingtape may be varie to accommodate it to thedifl'erent conditions of the'tube bein a manner which will laterjustably and engage 0 I result in the proper overlapping ing formed.That is to say the slipping of the tape may be overcome and the rate ofthe tube will be varied. A beveled gear 40 is rigid therewith, and a pis rigid with the lower end of this shaft 39 andv meshes with a similargear 41 on a shaft 42 which is supported in bearings 42', depending fromthe bed 15 of the machine. This shaft 42 extends longitudinally beneaththe bed 15 so that it will be most conven-- iently located not only forthe actuation of the winding tape pulleys 23 and 24, but also for theother units of the machine, as will later appear, This shaft .42 isactuated by the intermeshing of a beveled gear 43, which inion 44 on atransverse pulley shaft 45. The shaft 45 is actuated by a belt whichpasses around thepulley 46 on the end thereof and around the pulley onthe commutator shaft of a motor 47, the motor being supported by asuitable frame extendingbetween the legs 16.

Means is provided for feeding strips of stock, such as paper, to themandrel in proper angular relation thereto, under tension and'suppliedwith the desired adhesive to 'causethe strips to adhere to each otherand with a lubricant to reduce the friction between the mandrel and thestrips as they are wound into a tube and fed from the mandrel in theform of a tube. This means includes mechanism for applying a lubricantto one of the strips, that is, the one which comes into direct contactwith the mandrel, and includes also a mechanism for applying adhesive tothe other strip so that when it is, wound upon the previously woundlubricanfiv carrying strip it will adhere to the outer face thereof, andresult in the formation of port rolls 52 of strip stock, so .that .apair of rolls will be disposed above the bed 15 and, if desired, a pairof rolls may be disposed below the bed 15. By this arrangement, theminimum time will be-consumed in threadingnew strips of stock. to themandrel after the strips from onepair of supply. rolls; are consumed.For instance, presuming that"the'strip stock is being fed fromtensioning device.

strips as they pass to the mandrel and areon suitable supports 53 and54, above the v bed of the machine, and are arranged in suitable angularrelationship to the mandrel to v respectively accommodate the strips 55v and 56, which pass from the supply rolls be-.

neath a guide roller 57. Each of these channeled guides is provided witha suitable These devices tension the wound into the form of a tube. Thestrip 55 which passes through the guide 53 is suitably gummed by meansof an adhesive applying roll 61. Fig. 2 mounted'in an adhesive supplyreservoir 63 supported on a standard 64 extendinglupwardly from the bedof the machine and independent of the bolster 20. The rotation of theroll 61 is accomplished by means of beveled gears 65 and 66, Fig. 1, thefornier being rigid with the shaft 62 and the latter with a vertical 90- I shaft 67, Fig. 2, which is actuated by inter- 'meshing beveledgears 68 and 69, the gear 69 beingrigid with the longitudinally disposedshaft '42.

The amount of adhesive carried by the roll 61 to the strip 55 as thelatter passes over the roll is controlled by a roller 70 and is itselfrotated byintermeshing gears 72' ion roll 61 by a spring 74, and againstadjustable abutments 75 by means of which the space between the roller70 and the adhesive applying roll 61 is controlled to thereby con trolthe amount of adhesive applied to the strip 55 as it passes over theroll 61. The other strip 56 passes directly from the channeled'guide 54to the mandrel and forms the base of the tube on which the adhesivecoated strip 56 is wound. In order that the face of the strip 55 whichcontacts with the stationary mandrel may be lubricated to reduce thefriction between the mandrel and.

the tube as the latter is formed and fed along the mandrel, I haveenlarged the end of the mandrel as at'76, Fig. 1, and extendedfrom thisenlarged'end a lubricator 77, which is arranged in the pathof travel ofthe strip 55 and has an upwardly facing opening 78 therein from which alubricant such as oil flows to contact with the under surface of thestrip. This lubricator 77 is supplied with a'lubricant froma reservoirend.

Thus the strip 55 is lubricated before it reaches the'mandrel andconsequently the friction between the mandrel and the strip tance:

is reduced to a minimum, and the strip 56 is on its under surface coatedwith adhesive sothat when it is'wound on the previously woundstrip 55 itwill adhere thereto and form a rigid tube.

In order that the tube as it is continuously formed and fed from themandrel 18 maybe cut into predetermined lengths,

without interrupting the continuous movement of the tube,'and withoutdistorting'it,

I have provided means for severing the tube which means operatesveryquickly whilethe tube is moving'forward an a preciable dis- Theembodiment of this means illustrated in the drawing includes a cutterwhich operates in a path transverse to the speed of the knife-85 as ittraverses the tube is sufiicient to cause it to pass entirely throughthe tube without causing distortion or buckling of the tube as it is fedforward by the forming and feeding means. The knife 85 is of lightweight so that when carried by the fly wheel 86 the knife and Wheel as awhole are substantially balanced about the center of rotation of thewheel whether or not a separate balancing weight is provided on thewheel rim opposite the point of attachment of the knife. Asshown, thetube is formed to feed through the guide sleeve 90 into the path of theknife 85.

Summarizing the operation of the machine, the strips 55 and 56 of thestock are fed to the stationary mandrel 18, the former supplied on itsunder face, that is, the facewhich contacts with the mandrel, with oiland the latter supplied on its under face, which engages the previouslywrapped strip 55, with adhesive. The assage of these strips between theturns 0 the winding tape and the mandrel Winds them into a continuoustube, and feeds the tube longitudinally ot the mandrel to the cut offmechanism, the cutting blade 85 of which latter mechanism traverses thepath of movement of thetube in afixed path and cuts the tube intopredetermined lengths. These cutoff portions-are guided by the deliverymechanism tov a suitable receptacle or mechanism .forsubsequentlyoperating on the tubes The description of the illustrativeembodiment is illustrative merely and is not intended as defining thelimits of the invention.

What 1 clalm 1s: 1. In a tube forming machine, in comb1nation, amandrel, means for forming a substantiallyrigid tube on said mandrel andfor feeding the formed tube from the mandrel at a relatively low rate ofspeed, and means for severing the formed tube into predetermined lengthscomprising a cutting member moving at constant speed in a fixed plane ina path which traverses the path of the tube, the distance moved by saidcutting member between successive traverses being greatly in excess ofthe distance moved bysaid tube, whereby saidtube may be severed withoutcausing distortion or buckling.

2. Ina tube forming machine, in cpmbination, a-mandrel, means forhelically winding strips of material about said mandrel to form asubstantially rigid round tube and for continuously feeding the formedtube from said mandrel, and means for, severing the formed tube intopredetermined lengths comprising a cutting member moving atconstant'speed in a fixed plane in a path which traverses the path ofthe tube, the distance moved by said cutting member between successivetraverses being greatly in excess of the distance moved by said tube,whereby said tube may be severed without causing distortion orbuckling.v

3. In a tube forming machine, in combinati'on, a mandrel, means forforming a substantially rigid tube on said mandrel and for feeding theformed tube from the mandrel at'a relativel low rate of speed, means forsevering the ormed tube into predetermined lengths comprising a rotarycutting blade adapted to traverse the path of movement of the tube andmounted on an axis removed from the axis of the tube a substantialdistance, andmeans for driving said blade at a speed greatly in excessof the speed of movement of said tube, whereby the latter may be severedwithout distortion or buckling.

4. In a tube forming machine, in combination, a mandrel, means forhelically winding strips of material about said mandrel to form asubstantially rigid round tube and for continuously feeding the formedtube from said mandrel, and means for sevmay be severed withoutdistortion or. buckw ling.

5. In a tube forming machine, in combination, a mandrel, means forforming a substantially rigid tube on said mandrel and for feeding theformed tube from the mandrel at a relativel low rate of speed, means forsevering the ormed tube intopredeterment of the tube and mounted on anaxis 1 for driving said blade at a speed greatly in lying in a commonvertical plane with the axis of the tube and removed from the axis ofthe tube a substantial distance, and means excess of the speed of saidtube, whereby the latter may be severed Without distortion or buckling.

, 6. In a tube forming machine, in combination, a mandrel, means forforming a substantially rigid tube on said mandrel and for feeding theformed tube from the mandrel at a relatively low rate of speed, meansfor severing the formed tube into predetermined lengths comprising awheel having a relatively large radius mounted to rotate wi Lh itsperiphery closely adjacent said tube, a cutting blade mounted on saidwheel and projecting outwardly therefrom to traverse the path ofmovement of said tube, and means for driving said wheel at a speed suchthat the speed of said blade will be greatly in excess of the speed ofsaid tube, whereby the latter may be severed without distortion orbuckling.

7 In a tube forming machine, in combination, a mandrel, means forhelically winding strips of material about said mandrel to wardlytherefrom to traverse the path of movement of said tube, and means fordriving said wheel at a speed such that the speed of said blade will begreatly in excess of the r speed of movement of said tube, whereby thelatter may be severed without distortion or buckling."

In testimony whereof, I have signed my name to this specification this6th day of August, 1925.

EUGENE court

